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Chem Pre AP Final Review

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26376432strong acidpH<7 an acid that ionizes completely in aqueous solution
26376433actual yieldthe amount of product actually produced when a chemical reaction is carried out in an experiment.
26376434amphotericany species that can react as wither an acid or base
26376435arrhenius acid/ basea chemical compund that increases in caoncentration of H+ in an auqeous solution; a substances that increases the concentration of OH- in an aqueous solution
26376436strong basepH>7 is most commonly thought of as an aqueous substance that can accept protons.
26376437boiling pointThe temperature at which a liquid's vapor pressure is equal to the external or atmospheric pressure.
26376438Bronstead LowryA model of acids and bases in which an acid is a hydrogen-ion donor and a base is a hydrogen-ion acceptor.
26376439buffersweak acid and a salt of the acid that causes a solution to resist changes in pH
26376440chemical reactionsThe process by which the atoms of one or more substances are rearranged to form different substances; occurrence can be indicated by changes in temperature, color, odor, and physical states.
26376441colligative propertiesA physical property of a solution that depends on the number, but not the identity, of the disswolved solute particles; example properties include vapor pressure lowering, boiling point elevation, osmotic pressure, and frezzing point depression
26376442colloidsHeterogeneous mixture containg particles larger than solution particles but smaller than suspension particles that are categorized according to the phases of heir dispersed particles and dispersing mediums.
26376443composition reactanta reaction in which two or more substances combine to form a new compound
26376445concentrationsolurte/solvent; molartity; is the measure of how much of a given substance there is mixed with another substance.
26376446conductivityability to conduct electricity
26376447conugate acidsThe species produced when a base accepts a hydrogen ion from an acid.
26376448Dalton's LawStates that the total pressure of a mixture of gasses is equal to the sum of the pressures of all the gases in the mixture.
26376449densityA ration that compares the mass of an object to its volume.
26376450diluteto make (a liquid) thinner or weaker by the addition of water or the like.
26376451dissociationthe separation of ions that occurs when an ionic compund dissolves
26376452effervescencethe rapid escape of a gas from the liquid in which it is dissolved (opening and pouring soda)
26376453electrolytea subatance that dissolves in water to give a solution that conducts electric current
26376454endothermic (and sign)noting or pertaining to a chemical change that is accompanied by an absorption of heat (delta H)
26376458equilibriuma dynamic condition in which two opposing changes occur at equal rates in a closed system
26376459equilibrium constantthe ratio of the mathmetical product of the concentrations of substances formed at equilibrium to the mathematical product of the concentrations of hte reacting substances. Each concentration is raised to a power equal to the soeffienct that substance in the shemical equation.
26376460equilibrium vapor pressurethe pressure exterted by vapor in equilibrium with its corresponding liquid at a given temperature
26376461evidence of chemical reactionchange in color, smell, fromation of ppt
26376462excess reactantthe substance that is not used up completely in a reacition
26376463exothermic (and sign)noting or pertaining to a chemical change that is accompanied by a liberation of heat (delta)
26376464gasthe state of matter in which a substance has neither definite volume or shape
26376465heterogeneousnot having a uniform composition throughout
26376466homogeneoushaving a uniform composition throughout
26376468IMAFs (3).the force of attraction between moecules: London Dispersion Forces, Dipole-Dipole Forces, and Hydrogen bonding
26376469ionizationthe formation of ions from solute molecules by the action of teh solvent; andy process that results in the formation of an ion
26376470kinetic energythe energy of a body or a system with respect to the motion of the body or of the particles in the system.
26376471kinetic molecular theory.Explains the properties of gases in terms of the energy, size, and motion of their particles.
26376472Le Chatelierwhen a system at equilibrium is distriubuted by application of a stress, it attains a new euqilibrium poistion that minimizes the stress
26376473limiting reactantthe reactant that limits the amounts of the other reactants that can combine- and the amount of product that can form- chemiscal reation
26376474liquidthe state of matter in which the substance has definite volume but indefinite shape
26376476Molality (m)the cincentration os solution expressed in moles of solute per kilogram of solvent
26376477Molarity (M)The number of moles of solute dissolved per liter of solution; also known as molar concentration.
26376478mole ratioIn a balanced equation, the ratio between the numbers of moles of any two substances.
26376479neutralpH=0 exhibiting neither acid nor alkaline qualities
26376480percent yeildThe ratio of actual yield (from an experiment) to theoretical yield (from stichiometric calculations) expressed as a percent.
26376481pHThe negative logarithm of the hydrogen ion concentration of a solution; acidic solutions have pH values between 0 and 7, basic solutions have values 7 and 14, and a solution with a pH of 7 is neutral.
26376482phase changesA type of change that alters the physical properties of a substance but does not change its composition.
26376483pOHThe negative logarithm of the hydroxide ion concentration of a solution; a solution with a pOH above 7 is acidic, a solution with a pOH below 7 is basic, and a solution with a pOh of 7 is neutral.
26376484polarityattraction toward a particular object orin a specific direction
26376485pressure (P)Force applied per unit area. (atm)
26376486saltan ionic sompund composed of a cation and anion from an acid; an inoic compound composed of a cation from a base and an anion from and acid
26376487saturateda solution that sontians the maximum amount of dissolved solute
26376488solidthe state of matter that has definite volume and definite shape
26376489solubilitythe amount of a substance required to form a saturated solution with a specific amount of solvent at a specified temperature
26376490solutionA uniform mixture that may contain solids, liquids, or gasas; also called a homogeneous mixture.
26376491spectator ionsions that don't take part in ta chemical reation and is found in asolution both before and after the reaction.
26376492supersaturateda solution that contains more dissolved solute than saturated solution contians under the same conditions
26376493suspensionA type of heterogeneous mixture whose particles settle out over time and can be seperated from the mixture by filtration.
26376494temperatureA measure of the average kinetic energy of the particles in a sample of matter.
26376495theoretical yeildIn a chemical reaction, the maximum amount of product that can be produced from a given amount of reactant.
26376496titrationthe controlled addition and measurement of the amount of a solution of known concerntration required to react sompletely with a measured amount of a solution of unknown concentration.
26376497Tyndall effectThe scattering of light by colloidal particles.
26376498unsaturateda solution that contians less solute that a saturated solution under the existing conditions
26436951conjugate baseThe species produced when an acid donates a hydrogen ion to a base.
26436952effects of temperatureThe chemical effects of greater temperature include changes in the rate of reaction and the position of chemical equilibrium. Almost all reactions proceed more rapidly at higher temperatures because the molecules (in the gas phase) collide more vigorously at higher temperatures. A thermodynamic consequence of changing temperature is that the equilibrium constant of an exothermic reaction decreases as the temperature is raised, so reactants are more favored at low temperatures than at high. This dependence is sometimes referred to as Le Chatelier's principle, but it is better to regard it as a consequence of thermodynamics and in particular of the second law of thermodynamics.The higher the temperature, the greater the proportion of molecules in a state of high energy. High temperature corresponds to a higher average speed of the molecules and a wider range of speeds in the sample.
26436953solubility rules(refer to your chem notes)
26436954solubility of gassesHenry's Law; The solubility of a gas in a liquid depends on temperature, the partial pressure of the gas over the liquid, the nature of the solvent and the nature of the gas. The most common solvent is water.
26436955solubility of solidsThe solubility of a solid substance usually refers to the concentration of the substance in a liquid that has reached equilibrium with the substance in solid phase. solubility is determined by the combination of substance and liquid
26436956nonpolara covalent bond in which the bonding electrons are shared equally by the bonded atoms, resulting in abalanced distribution of electrical charge
26436957polarhaving an uneven distribution of charge
26438241precipitate (ppt)a solid that is produced as a result of chemical reations in a solution and that separates from the solution
26438242enthalpy changethe amount of energy absorbed or lost by a system during a process at constant pressure
26439451strong electrolyteany compound of which all or almost all of the dissolved compound exists as ions in aqueous solutions
26439452weak electrolytea coumpound of which a relatively small amount of the dissolved compound exists as ions in an aqueous solution
26439453nonelectrolytea substance that dissolves in water to give a solution that does not conduct an electric current
26439454weak acidpH<7 an acid that is weak electrolyte and does not completely ionize
26439455weak basepH>7 is most commonly thought of as an aqueous substance that can accept protons.
26504544Concentrateda solution containing relatively large amounts of solute
26505894enthalpy of fusionEnergy required to convert a solid to a liquid.
26506317enthalpy of vaporizationthe amount of heat energy required to vaporize a metal, a measure of the strength of the bonds that hold it together
26507339Enthalpy of solutionthe net amount of energy absorbed as heat by the solution when a specific amount of solute dissolves in a solvent.
26507340enthalpy of vaporizationthe amount of heat energy required to vaporize a metal, a measure of the strength of the bonds that hold it together
26509086Strong AcidsHI, HBr, HCl, HNO3, H2SO4, HClO3, HClO4 (BrICl NO SO)
26509087Strong BasesLiOH, NaOH, KOH, RbOH, Ba(OH)2, Sr(OH)2, Ca(OH)2 (CaSr Na BALiK)
26509088common industrial acidssulfuric, nitric, phosphoric, hydrochloric, acetic
26509089Lewis AcidElectron Acceptor
26509090Lewis BaseElectron Donor
26509094amphiproticcan donate or accept proton (ie: H20)
26602901BrINClHOFBromine, Iodine, Nitrogen, Chlorine, Hydrohen, Oxygen, Fluorine (written with subscript 2 by when by itself)
26603053London Dispersiontemporary(spontaneous) dipole- induced dipole attraction. Only possible attractive forces for nonpolar molecules. As the size of the molecule increases, the strength of the forces increase.
26603335Dipole-Dipoleattraction between negative and positive ends of POLAR moecules. Stronger than London dispersion forces
26603336Hydrogen BondingVery strong dipole-dipole attraction, only possible when Hydrogen is bonded with F, O, or N
26603880Balancing Chemical Equations(super obvious, refer to notes if you need help)
26603881Soichiometrythe calculation of quantitative (measurable) relationships of the reactants and products in a balanced chemical reaction (refer to notes for set up and practice probs)
26603882Percent yeildsPercent yield= 100x (atual amount/ predicted amount)
26603883Solutionsdeals with molarity (refer to notes for set up)
26603884Limiting reactantsThe reactant in a chemical reaction that limits the amount of product that can be formed. The reaction will stop when all of the limiting reactant is consumed. (refer to notes for calculation set up)
26603886Boyle's LawPressure-Volume Relationship: P1V1=P2V2 "Boyle the Peas and Vegetables" (refer to notes for practice probs)
26603887Gay-Lussac's LawPressure-Tempurature Relationship: P1/ T1=P2/T2 "Gayle drives a PT cruiser" (refer to notes for practice probs)
26603888Avogadro's LawEqual volumes of gases at the same tempurature and pressure contain equal numbers of molecules. V=kn (constant x given moles) Standard molar volume of gas at STP: k (constant) = 1mol = 22.4L.
26603889Combined gas LawExpresses the relationship between pressure, volume, and tempurature of a fixed amount of gas. P1V1/T1=P2V2/T2 (refer to notes for practice probs)
26603890Ideal gas LawRelationship between pressure, volume tempurature, and number of moles of a gas: PV=nRT; R= 0.08206(ideal gas law contant) (refer to notes for practice probs)
26603891Dalton's LawThe total pressure of a mixture of gases is equal to the sum of the partial pressures of the component gases: Ptot= Pa + Pb + Pc. Appying Dalton's Law-The gas collected by water displacemen(or collected over water): Patm= Pgas + PH2O
26603892Graham's LawStates that the rate of effusion of gases at the same tempurature and pressure are inversely proportional to the square root of their molar masses: Rate1 / Rate2 = square root of (Mass2 / Mass 1) [refer to notes for practice probs]
26603893Henry's LawThe solubility of a gas in a liquid is directly proportional to the partial pressure of that gas on the surface of the liquid: kC ( constant x concentration)
26603894Gas Law constantk (constant)= R= 0.08206(ideal gas law contant); units(R): L*atm/ mol*K
26603895Gas Law unitsPressure (P), Volume (V) , moles(n) , R (constant), Tempurature (T)
26603896Gas Law variablesatm (P), L [Liter] (V), mol (n), L*atm/ mol*K (R), K [Kelvin] (T)
26603897BCEA Balanced Chemical Equation has an equal ratio of moles on both sides of the equation, written with phases.
26603898TIETotal Ionic Equation includes every single part of the reaction; all ionized reactants and products.
26603899NIENet Ionic Equation include only those compoudns and ions that undergo a chemical change in a reaction in an aqueos solution
26603900Colligative Propertiesproperty determined by the number of particles present in a system but that is independent of of the properties of the particles themselves. (1) Vapor Pressure Lowering (2) Boiling Point Elevation [delta tb=Kbm] (3) Freezing Point depression [delta tf=Kfm] (4) Osmotic Pressure [external pressure that must be applied to stop osmosis]
26603901Equilibrium calculationsK= [C]c [D]d / [A]a [B]b (eqilibrium constant): K, Kc, Keq, Ka, Kb, Kw, Ksp, Kp (refer to notes for set up and practice probs)
26603902Rate of dissolution(rate of solubility) Factors that affect this are increasing the surface area of the solute, agitating a solution, and heating a solvent
26603903Types of Chemical reactionsSynthesis, decomposition, single replacement, double replacement, combustion (products= CO2 + H2O), acid-base
26606839Titrationsa method used to determine he concentration of a substance in a solution of known volume and concentration until the reaction is completed, which is usually indicated by a change in color. (refer to notes for calculation set up)
26607497Standard Tempurature Pressure (STP)0 degrees C, one atm (760 mmHg, 760 torr)
26607808Charle's LawVolume- Tempurature Relationship: V1/T1=V2/T2 (refer to notes for practice probs)
26607809absolute zero (relating to gas laws)when determining Kelvin for gas law equations, K= 273.15 + C (degrees celcius in the prob)
26612198miscibletwo liquids will mix
26612199immiscibleliquids won't mix
26612535acidssour taste, change color of acid-base indicator, react w/ active metals and release hydrogen gas, react w/ bases to produce salts and water, conduct electric current
26612536basesbitter taste, change color of acid-base indicator, feel slippery, react w/ acids to produce salts and water, conduct electric current
26613824PolyproticMonoprotic: HCl Diprotic:H2SO4 Polyprotic: H3PO4

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